Nut-lock.



R. SCI-IHRER.

NUT LOCK. A'PPLIonroN FILED APB. 3.1908.

923,082, Patented May 25, 1909.

IIIIIIIRHLQ.,

INVENTOR wlTNESsEs i@ Bv /VLWLQ ATTORNEY i To all whom it may concern.'

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-. ROBERT SCHERER, yOF NORRISTOWN, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO CHRIS- TIN P. ROMElS, OF BRIDGEPORT, PENNSYLVANIA.

Be it known that l, ROBERT Scannen, a

f citizenol the United States, and a resident fio of Norristown, county ci' lvlontgoniery, and State olj` Pennsylvania, have invented certain new and useful Improvements in Nuteliocls, ol which the following is a iull, clear, and act description, reference' being had to the accompanying drawings, :forming a part ol this specification.

Themain objects oi' my invention are: to provide a simple and durable nut lock which will be cheap to manufacture, easy to operate, and strong and durable in acticnto providea nut lock which, while holding the nut rigid against accidental displacement,

will permit ci' the easy and convenient adjustment oi the nut when desired to provide a nutloclmvhich will be carried concealed by the nutand which will be always in position ready for use and to provide a nut lock which ywill be particularly suitable for use in f i combination with lish plates in rail joints.

' the nut.

Vith these and other objects in view the invention consists ol the construction hereinafter set i'orth.

yln the kaccompanying` drawings Figure 1 is aside elevation of arail joint showing the applicationy ci a nut lock constructed in accordance with this invention; Fig. 2 a transverse vertical section oi' the same, Fig. 3 a lace view of the washer forming a part of thisinvention; Fig. l a side elevation of the washer; Fig. 5 an elevation of the inner end i oi the nut and Fig. 5 a longitudinal section of the nut. n

Referring to the drawings, the device comprises a nut 1, oi standard dimensions which maybe constructed to fit standard bolts of anys'ize and a washer 2 which is specially constructed in accordance with this inven* tion tok coperate withthe nut and with a fish plate of a rail joint or withany other y f suitabley base.

Thenut y1 is provided upon its inner face with cylindrical recesses 3 extending longitudinally oi' the nut and upon opposite sides thereof at `equal distances from the axis oi' rlwo such krecesses are herein shown although only one is absolutely necessary and any number may be used. lNithin each o'l these recesses 3 is tightly litted a bushing 4 provided with a central bore 5, the inner end oi the bore being enlarged as at 6 to form an inwardly lacing annular shoulder y Speccaton of Letters Patent.

' Application niet). April 3, 1908.

Patented May 25, 1909.

semi No. raises.

'7.` lillithin the bore 5 oll the bushing is slidably mounted a pin or catch 8 having its outer end tapered to i'orni a conical point 9 and its inner end enlarged to iorm a head 10 which rests within the inner enlarged portion oi the bore and is adapted to engage against the inwardly Jiacin g shoulder 7 thereof. The head of the pin or catch 8 is pressed outwardly against the shoulder oi' the bore by means ol the spiral spring 11 which is interposed between the head ol the pin and the opposite end of the recesses 3 o'l` the nut.

The washer 2 is provided upon its 'face side with countensunl recesses 12`spaced uniformly in a circle concentric with the washer and o'l' a radius equal to the radius ol' the points oi' the pins 8 'from the center of the nut, and the pins are so spaced upon the nut that when the nut and the washer are brought together, the pins simultaneously engage corresponding recesses ol` the washer.

To prevent the washer from turning upon its seat, the inner end 13 ol the washer is reduced and provided with lattened sides 14, the reduced end being proportioned to lit closely in the elongated apertures 15 ci' the ish plates 16, the flattened sides ol the washer engaging against the flattened sides o'l the aperture.

The bolt 17 used in this construction is of standard size and shape, being provided at one end with a head 18 and having the shank portion 18 of the bolt adjacent the head enlarged and flattened to iit in elongated apertures 15 ofthe lish plates to prevent the bolt from turning, and having screw threads 19 upon the opposite end of the bolt adapted to engage with the corresponding screw threads oi the nut. Through this description it is evident that when the bolt 17 is in position through the iish plates and rail end 2O and the washer 2 is seated over the bolt in the aperture 15 of the iish plate and when the nut is threaded on the bolt and brought into engagement with therecessed face of the washer that the spring pressed pins or catches 8 of the nut will snap into engagement in. the recesses 12 in the washer; and owing to the conical shape of the pins and oi the recesses of the washer the pins will yield against the force of their springs to permit the nut to be easily and readily rotated, when desired, by means of a wrench; but when in engagement in the recesses of the washer the pins will hold the nut against any ordinary force such as Would accidentally be brought to bear to displace the nut.

Although l have shoWn only one form in Which this invention may be constructed, it is evident that many changes might be made in the details of the construction, Within the scope of the appended claims, Without departing from the spirit of this invention, or sacrificing any of the advantages thereof.

Having thus fully described my invention, I claim and desire to protect by Letters Patent of the United States:

l. A nut lock comprising` a nut having a recess upon the inner face and extending parallel to the axis thereof part Way only through said nut, a bushing iitting tightly in said recess having a central bore, said bore being enlarged at its inner end to form an annular shoulder, a pin slidably mounted in said bore having its inner end enlarged to form a head Which rests Within the inner enlarged portion of the bore and is adapted to engage against the annular shoulder of the bushing, and having its outer end tapered to form an engaging point, a spring interposed between the head of the pin and the opposite end of the recess of the nut and a iixed seat for said nut having a recess adapted to be engaged by said pin.

2. A nut lock comprising a nut having a recess upon the inner face and extending parallel to the axis thereof part Way oiny through said nut, a bushing `htting tightly in said recess having a central bore, said bore being enlarged at its inner end to form an annular shoulder, a pin slidably mounted in said bore having its inner end enlarged to form a head Which rests Within the inner enlarged portion of the bore and is adapted to engage against the annular shoulder of the bushing, and having its outer end tapered to form an engaging point, a spring interposed between the head of the pin and the opposite end of the recess of the nut, a bolt extending through said nut and a Washer upon said bolt adj acent and upon the inside of said nut, said Washer having means to prevent the turning thereof and being provided With av recess adapted to be engaged by said pin.

3. In a nut lock, the combination With a bolt having means adjacent the head thereof to prevent the bolt from turning, a nut upon said bolt provided 'ith a recess upon the inner face thereof extending in a direction parallel to the axis of the nut and only part Way through the nut, a bushing fitting tightly in said recess and having its outer surface flush With the inner surface of the nut, said bushing having a central bore enlarged at its inner end to form an annular shoulder, a pin in said bore having its inner end enlarged to form a head fitting in the enlarged portion of said bore and its outer end tapered to form an engaging point projecting from the inner face of said nut, a spring betWee-n the head of said pin and the opposite end of said recess, and a Washer upon said bolt, said Washer being provided u on its face side With spaced recesses adaptet to be engaged by said pin and the inner end of said Washer being reduced and provided With flattened sides for holding said Washer against turning.

In Witness Whereof, i have hereunto set my hand this first day of April, A. D. 1908.

ROBERT SCHERER.

itnessesz ALEXANDER PARK, A. GARDNER. 

